Chengdu Huaxin Cemented Carbide Co., Ltd. imagwira ntchito yopanga zinthu zosiyanasiyana.masamba a ulusi wa mankhwala(Chofunika kwambiri pa ulusi wokhazikika wa polyester). Masamba a ulusi wa mankhwala amagwiritsa ntchito ufa wa tungsten carbide wabwino kwambiri komanso wolimba kwambiri.Tsamba la carbide lopangidwa ndi simentiChopangidwa ndi ufa wachitsulo chimakhala ndi kuuma kwambiri komanso kukana kukalamba, ndipo chimakhala ndi kukana kutentha komanso dzimbiri. Tsamba lathu limagwiritsa ntchito njira imodzi yopangira zinthu, nthawi yogwira ntchito ya chinthucho imawonjezeka ndi nthawi zoposa 10, sipadzakhala kusweka, kuchepetsa nthawi yogwira ntchito, ndikuwonetsetsa kuti m'mphepete mwachitsulo ndi woyera komanso wopanda ma burrs. Masamba a ulusi wa mankhwala omwe tidapanga athandiza kwambiri makasitomala kupanga bwino! Masamba a ulusi wa mankhwala a Tungsten carbide omwe amagwiritsidwa ntchito kwambiri kudula ulusi wa mankhwala, ulusi wosiyanasiyana wodulidwa, ulusi wagalasi (wodulidwa), kudula ulusi wopangidwa ndi anthu, ulusi wa kaboni, ulusi wa hemp, ndi zina zotero.
Kodi nsalu ya Polypropylene ndi chiyani: makhalidwe ake, momwe imapangidwira komanso komwe imapangidwira
ndi Sewport Support Team • Meyi 25, 2022
Kodi Nsalu ya Polypropylene N'chiyani?
Nsalu ya polypropylene ndi mawu omwe amagwiritsidwa ntchito pofotokoza nsalu iliyonse yomwe imachokera ku polypropylene ya thermoplastic polymer. Mtundu uwu wa pulasitiki ndi gawo la gulu la polyolefin, ndipo siwopanda polar komanso pang'ono kristalo. Pafupi ndi polyethylene, polypropylene ndi pulasitiki yachiwiri yopangidwa kwambiri padziko lonse lapansi, ndipo imagwiritsidwa ntchito kwambiri popaka, udzu, ndi mitundu ina ya zinthu zogula ndi zamafakitale kuposa momwe imagwiritsidwira ntchito popanga nsalu.
Mtundu uwu wa pulasitiki unapangidwa koyamba ndi kampani yaku America ya Phillips Petroleum mu 1951. Akatswiri a zamankhwala Robert Banks ndi J. Paul Hogan anali kuyesera kupeza petulo kuchokera ku propylene, ndipo mwangozi adapanga polypropylene. Ngakhale kuti kuyesaku kunawonedwa ngati kulephera, zinadziwika mwachangu kuti chinthu chatsopanochi chili ndi kuthekera kofanana ndi polyethylene m'magwiritsidwe ambiri.
Komabe, sizinali mpaka mu 1957 pomwe polypropylene idapangidwa kukhala chinthu choyenera kupanga zinthu zambiri. Mu 1954, katswiri wa zamankhwala waku Italy Giulio Natta ndi mnzake waku Germany adapanga chinthuchi kukhala polima ya isotactic, ndipo kampani yaku Italy Montecatini idayamba kupanga chinthuchi mwachangu kuti chigwiritsidwe ntchito m'mabizinesi komanso kwa ogula.
Poyamba, polypropylene inkagulitsidwa pansi pa dzina lakuti "Moplen," ndipo dzinali likadali chizindikiro cholembetsedwa cha kampani ya LyondellBasell. Komabe, nthawi zambiri chinthuchi chimatchedwa polypropylene kapena "polypro" mwachidule.
Chipando chapamwamba chokhala ndi denga ndi sling mu nsalu ya polypropylene yofiirira
Pamene kugwiritsa ntchito polypropylene kunayamba kutchuka kwambiri m'mafakitale ndi mafakitale osiyanasiyana, pang'onopang'ono zinapezeka kuti pulasitiki yamtunduwu imagwiranso ntchito ngati nsalu. Nsalu ya polypropylene ndi nsalu yopanda ulusi, zomwe zikutanthauza kuti imapangidwa mwachindunji kuchokera ku nsalu popanda kufunikira kopota. Phindu lalikulu la polypropylene ngati nsalu ndi luso lake losamutsa chinyezi; nsalu iyi singathe kuyamwa chinyezi chilichonse, ndipo m'malo mwake, chinyezi chimadutsa mu nsalu ya polypropylene yonse.
Kapangidwe kameneka kamalola chinyezi chomwe chimatuluka mukuvala chovala cha polypropylene kutha msanga kwambiri kuposa momwe chingachitire ndi chovala chosunga chinyezi. Chifukwa chake, nsalu iyi ndi yotchuka mu nsalu zomwe zimavalidwa pafupi ndi khungu. Komabe, polypro imakonda kuyamwa ndi kusunga fungo la thupi ikagwiritsidwa ntchito pa zovala zamkati, ndipo imasungunukanso kutentha kochepa. Nsalu ya polypro yosungunuka imatha kuyambitsa kutentha kwakukulu, ndipo vutoli limapangitsanso kuti n'zosatheka kutsuka nsalu iyi kutentha kwambiri.
Nsalu ya polypropylene ndi imodzi mwa ulusi wopepuka kwambiri wopangidwa, ndipo imalimbana kwambiri ndi ma acid ndi alkali ambiri. Kuphatikiza apo, mphamvu ya kutentha ya chinthuchi ndi yotsika kuposa ya ulusi wambiri wopangidwa, zomwe zikutanthauza kuti ndi yoyenera kugwiritsidwa ntchito nthawi yozizira.
Nsalu ya Beige ndi White Basket Yolukidwa Polypropylene Upholstery
Kuphatikiza apo, nsalu iyi ndi yolimba kwambiri kuti isagwe, komanso imalimbana ndi tizilombo ndi tizilombo tina. Chifukwa cha mphamvu zake zodziwika bwino za thermoplastic, ndi yosavuta kuumba pulasitiki ya polypro kukhala mitundu yosiyanasiyana, ndipo imatha kusinthidwa kudzera mu kusungunuka. Pulasitiki iyi siingathe kusweka mosavuta.
Komabe, polypro imadziwika kuti ndi yovuta kuipaka utoto ikapangidwa, ndipo zimakhala zovuta kupanga nsalu iyi kukhala ndi mawonekedwe osiyanasiyana. Nsalu iyi imatha kuwonongeka ndi UV, ndipo siimamatira bwino ku latex kapena epoxyes. Monga nsalu zina zonse zopangidwa, nsalu ya polypropylene imakhudzanso kwambiri chilengedwe.
Kodi Nsalu ya Polypropylene Imapangidwa Bwanji?
Monga mitundu yambiri ya mapulasitiki, polypro imapangidwa kuchokera ku zinthu zomwe zimachokera ku mafuta a hydrocarbon monga mafuta a petroleum. Choyamba, monomer propylene imachotsedwa ku mafuta osakonzedwa mu mawonekedwe a gasi, ndipo monomer iyi imayikidwa mu njira yotchedwa chain-growth polymerization kuti ipange polymer polypropylene.
Akamalumikiza ma monomers ambiri a propylene, amapangidwa pulasitiki yolimba. Kuti apange nsalu yogwiritsidwa ntchito, polypropylene resin iyenera kusakanikirana ndi mitundu yosiyanasiyana ya ma plasticizer, stabilizers, ndi fillers. Zowonjezera izi zimalowetsedwa mu polypro yosungunuka, ndipo chinthu chomwe mukufuna chikapezeka, pulasitiki iyi ikhoza kuloledwa kuzizira kukhala njerwa kapena ma pellets.
Ma pellets kapena njerwa zimenezi zimasamutsidwira ku fakitale yopangira nsalu, ndipo zimasungunukanso. Nthawi zambiri, polypropylene iyi imapangidwa kukhala mapepala, kapena ingaloledwe kuzizira mu nkhungu. Ngati mapepala apangidwa, ulusi woondawu umadulidwa mu mawonekedwe omwe mukufuna ndikusokedwa kapena kumangiriridwa kuti apange zovala kapena matewera. Njira zosiyanasiyana zopangira zimagwiritsidwa ntchito popanga polypropylene kukhala zinthu zosakhala zovala.
Kodi nsalu ya polypropylene imagwiritsidwa ntchito bwanji?
Nsalu ya polypro imagwiritsidwa ntchito kwambiri popanga zovala zomwe zimafuna kusamutsa chinyezi. Mwachitsanzo, pulasitiki yamtunduwu imagwiritsidwa ntchito kwambiri popanga mapepala apamwamba a matewera, omwe ndi zigawo za matewera omwe amakhudza khungu mwachindunji. Pogwiritsa ntchito polypropylene pa gawo la matewera ili, zimatsimikizika kuti palibe chinyezi chomwe chidzapitirirabe kukhudza khungu la mwana, zomwe zimachepetsa mwayi wopanga ziphuphu.
Kapangidwe ka nsalu yosalukidwa iyi kamasamutsa chinyezi ndipo kamapangitsa kuti ikhale nsalu yotchuka kwambiri pa zovala za nyengo yozizira. Mwachitsanzo, nsalu yopangidwa ndi nsalu iyi idagwiritsidwa ntchito popanga zovala zamkati ndi zamkati zomwe zidagwiritsidwa ntchito m'badwo woyamba wa US Army's Extended Cold Weather Clothing System (ECWCS). Zinapezeka kuti zovala zopangidwa ndi nsalu iyi zimathandizira kuti asilikali azikhala bwino m'nyengo yozizira, koma mavuto a nsalu za polypro apangitsa kuti asilikali a ku United States asinthe kukhala nsalu za polyester za m'badwo wachiwiri ndi wachitatu wa ECWCS.
Nthawi zina, nsalu ya polypropylene ingagwiritsidwenso ntchito popanga zovala zamasewera, koma mavuto angapo ndi mtundu uwu wa pulasitiki apangitsa mitundu yatsopano ya polyester kukhala yotchuka kwambiri pa ntchito iyi. Ngakhale kuti zinthu zomwe nsalu iyi imasamutsa chinyezi ndizofunikira kwambiri pa zovala zamasewera, kulephera kutsuka nsalu iyi ndi madzi otentha kumapangitsa kuti zikhale zovuta kuchotsa fungo loipa kuchokera ku zovala zamasewera za polypropylene. Kuphatikiza apo, nsalu iyi imatha kuwonongeka ndi UV ndipo imapangitsa kuti ikhale chisankho choipa pa zovala zakunja zilizonse.
Kupatula dziko la zovala, pulasitiki ya polypropylene imagwiritsidwa ntchito m'njira zosiyanasiyana. Chimodzi mwa zinthu zodziwika bwino zomwe zimagwiritsidwa ntchito ndi mankhwalawa ndi mu udzu wakumwa; ngakhale kuti udzu poyamba unapangidwa kuchokera ku pepala, polypropylene tsopano ndiye chinthu chomwe chimagwiritsidwa ntchito kwambiri pa izi. Pulasitiki iyi imagwiritsidwanso ntchito popanga zingwe, zilembo za chakudya, ma CD a chakudya, magalasi a dzuwa, ndi mitundu yosiyanasiyana ya matumba.
Kodi Nsalu ya Polypropylene Imapangidwira Kuti?
China pakadali pano ndi dziko lomwe limatulutsa zinthu zambiri zopangidwa ndi polypropylene. Mu 2016, mafakitale mdziko muno adapanga mapulasitiki ambiri a polypropylene okwana $5.9 biliyoni, ndipo akuyembekezeka kuti njira imeneyi idzakhalabe yokhazikika mtsogolomu.
Zinthu zambiri zimenezi zimapangidwanso ku Germany; dziko lino linapanga pafupifupi $2.5 biliyoni ya polypropylene mu 2016, ndipo Italy, France, Mexico, ndi Belgium nawonso ndi opanga kwambiri mankhwalawa. Mu 2016, United States inapanga $1.1 biliyoni ya zinthu zopangidwa ndi polypropylene.
Kampani yaikulu kwambiri padziko lonse lapansi yopanga polypropylene ndi LyondellBasell. Kampaniyi ili ku Netherlands, ndipo ili ndi malo ogwirira ntchito ku Houston ndi London.
Kampani yoyamba mumakampani awa ndi Sinopec Group, yomwe ili ku Beijing, ndi PetroChina Group, yomwe ilinso ku Beijing. Opanga 10 apamwamba a mankhwalawa ndi 55 peresenti ya kupanga konse kwa polypropylene padziko lonse lapansi.
Polypropylene imakonzedwa kukhala nsalu padziko lonse lapansi. China ndiye wopanga wamkulu wa nsalu zomalizidwa ndi polypro, ndipo mtundu uwu wa nsalu umasokedwanso mu zovala ndi mitundu ina ya nsalu ku India, Pakistan, Indonesia, ndi mayiko ena angapo.
Kodi Nsalu ya Polypropylene Imawononga Ndalama Zingati?
Chovala cha polypropylene choyikidwa mkati mwa bedi lokwezedwa ndi mkungudza
Popeza polypro ndi imodzi mwa mitundu ya pulasitiki yopangidwa kwambiri, nthawi zambiri imakhala yotsika mtengo kwambiri. Mafakitale ambiri akuluakulu amapikisana kuti agule msika wa pulasitiki padziko lonse lapansi, ndipo mpikisano uwu umatsitsa mitengo.
Komabe, nsalu ya polypropylene ikhoza kukhala yokwera mtengo. Chifukwa chachikulu cha kukwera kwa mtengo kumeneku ndi kusowa kwa kufunikira; ngakhale nsalu ya polypropylene inkagwiritsidwa ntchito popanga zovala zamkati zotentha pafupipafupi, kupita patsogolo kwaposachedwa kwa kupanga polyester kwapangitsa kuti nsalu yamtunduwu ikhale yakale kwambiri. Chifukwa chake, nsalu yamtunduwu imadula kwambiri kwa opanga nsalu kuposa nsalu zofanana, monga polyester, ndipo mtengo wokwerawu nthawi zambiri umaperekedwa kwa ogula.
Komabe, ndikofunikira kufotokoza kuti mtengo wokwerawu umangogwira ntchito pa nsalu ya polypropylene yokha yomwe idapangidwa kuti ipangidwe zovala. Mitundu yosiyanasiyana ya nsalu ya polypropylene yomwe si yoyenera zovala imagulitsidwa pamitengo yotsika, ndipo nthawi zambiri imakhala yotsika mtengo kwambiri. Nsalu izi zimabwera mumitundu yosiyanasiyana komanso mawonekedwe osiyanasiyana.
Kodi pali mitundu yosiyanasiyana ya nsalu za polypropylene?
Zoonjezera zosiyanasiyana zitha kuwonjezeredwa ku polypro ikadali mumadzimadzi kuti isinthe mawonekedwe a chinthuchi. Kuphatikiza apo, pali mitundu iwiri ikuluikulu ya pulasitiki iyi:
• Polypropylene ya Homopolymer: Pulasitiki ya Polypro imaonedwa ngati homopolymer ikakhala kuti ili kale popanda zowonjezera zina. Mtundu uwu wa pulasitiki ya polypro nthawi zambiri suonedwa ngati chinthu chabwino chopangira nsalu.
• Polypropylene ya Copolymer: Mitundu yambiri ya nsalu za polypropylene ndi copolymer. Mtundu uwu wa pulasitiki ya polypropylene umagawidwanso kukhala polypropylene ya block copolymer ndi polypropylene ya random copolymer. Mayunitsi a co-monomer mu mawonekedwe a block a pulasitiki iyi amakonzedwa m'mawonekedwe okhazikika a sikweya, koma mayunitsi a co-monomer mu mawonekedwe osasinthika amakonzedwa m'mawonekedwe osasinthika. Kaya ndi block kapena random polypropylene yoyenera kugwiritsidwa ntchito pa nsalu, koma pulasitiki ya block polypropylene imagwiritsidwa ntchito kwambiri.
Nthawi yotumizira: Meyi-25-2022
